{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,11,15]],"date-time":"2026-11-15T07:31:08Z","timestamp":1794727868999,"version":"4.9.1"},"reference-count":16,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2020,8,31]],"date-time":"2020-08-31T00:00:00Z","timestamp":1598832000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2020,8,31]],"date-time":"2020-08-31T00:00:00Z","timestamp":1598832000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["BMC Musculoskelet Disord"],"published-print":{"date-parts":[[2020,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec>\n<jats:title>Background<\/jats:title>\n<jats:p>The prepsoas lateral approach for spinal fusion, oblique lateral lumbar interbody fusion (OLIF), is considered one of the minimally invasive spinal fusion methods and is gaining popularity due to improved outcomes with copious supporting evidence. To date, no publication has studied the various positions of the left hip in actual patients which might affect the retroperitoneal oblique corridor (ROC). The study aimed to find the relevancy of the left hip position and the size of ROC.<\/jats:p>\n<\/jats:sec><jats:sec>\n<jats:title>Methods<\/jats:title>\n<jats:p>We recruited 40 consecutive patients who needed diagnostic MRI from the out-patient clinic. MRI scan from L2 to L5 was performed in the supine, right lateral decubitus with hip flexion, and right lateral decubitus with hip in a neutral position. The retroperitoneal oblique corridor (ROC) was measured at the intervertebral disc level and compared.<\/jats:p>\n<\/jats:sec><jats:sec>\n<jats:title>Results<\/jats:title>\n<jats:p>ROC of the hip in neutral position was significantly larger than hip flexion in all levels (<jats:italic>p<\/jats:italic>\u00a0&lt;\u20090.05); there was no significant difference in the ROC among levels (<jats:italic>p<\/jats:italic>\u00a0=\u20090.22). ROC seems to be largest at L2\/3 followed by L3\/4 and L4\/5 respectively in all positions.<\/jats:p>\n<\/jats:sec><jats:sec>\n<jats:title>Conclusions<\/jats:title>\n<jats:p>The retroperitoneal oblique corridors of L2 to L5 were significantly increased when the hip is in the neutral position, while the psoas cross-sectional area and anterior thickness were minimized in this position. Surgeons might benefit from a neutral position of the left hip in the oblique lateral lumbar interbody fusion (OLIF) procedure.<\/jats:p>\n<\/jats:sec>","DOI":"10.1186\/s12891-020-03592-9","type":"journal-article","created":{"date-parts":[[2020,8,31]],"date-time":"2020-08-31T13:03:17Z","timestamp":1598878997000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":14,"title":["Neutral hip position for the oblique lumbar interbody fusion (OLIF) approach increases the retroperitoneal oblique corridor"],"prefix":"10.1186","volume":"21","author":[{"given":"Vit","family":"Kotheeranurak","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Weerasak","family":"Singhatanadgige","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chindarat","family":"Ratanakornphan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wicharn","family":"Yingsakmongkol","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Richard A.","family":"Hynes","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0116-8791","authenticated-orcid":false,"given":"Worawat","family":"Limthongkul","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2020,8,31]]},"reference":[{"key":"3592_CR1","doi-asserted-by":"crossref","unstructured":"Mayer HM. 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Mini-open anterior retroperitoneal lumbar Interbody fusion: oblique lateral Interbody fusion for degenerated lumbar spinal Kyphoscoliosis. Asian Spine J. 2015;9(4):565\u201372.","journal-title":"Asian Spine J."},{"issue":"Suppl 4","key":"3592_CR4","doi-asserted-by":"publisher","first-page":"471","DOI":"10.1007\/s00586-016-4465-9","volume":"25","author":"C Mehren","year":"2016","unstructured":"Mehren C, Korge A. Minimally invasive anterior oblique lumbar interbody fusion (OLIF). Eur Spine J. 2016;25(Suppl 4):471\u20132.","journal-title":"Eur Spine J"},{"issue":"3","key":"3592_CR5","doi-asserted-by":"publisher","first-page":"671","DOI":"10.1007\/s00586-015-4170-0","volume":"26","author":"J Sato","year":"2017","unstructured":"Sato J, Ohtori S, Orita S, Yamauchi K, Eguchi Y, Ochiai N, et al. Radiographic evaluation of indirect decompression of mini-open anterior retroperitoneal lumbar interbody fusion: oblique lateral interbody fusion for degenerated lumbar spondylolisthesis. 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J Orthop Sports Phys Ther. 2010;40(2):82\u201394.","journal-title":"J Orthop Sports Phys Ther"}],"container-title":["BMC Musculoskeletal Disorders"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1186\/s12891-020-03592-9.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/article\/10.1186\/s12891-020-03592-9\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1186\/s12891-020-03592-9.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2021,8,30]],"date-time":"2021-08-30T23:33:48Z","timestamp":1630366428000},"score":1,"resource":{"primary":{"URL":"https:\/\/bmcmusculoskeletdisord.biomedcentral.com\/articles\/10.1186\/s12891-020-03592-9"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,8,31]]},"references-count":16,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2020,12]]}},"alternative-id":["3592"],"URL":"https:\/\/doi.org\/10.1186\/s12891-020-03592-9","relation":{},"ISSN":["1471-2474"],"issn-type":[{"value":"1471-2474","type":"electronic"}],"subject":[],"published":{"date-parts":[[2020,8,31]]},"assertion":[{"value":"23 February 2020","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"17 August 2020","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"31 August 2020","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"Written informed consent was obtained from each individual participant included in the study. All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and\/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. The institutional review board (IRB) of King Chulalongkorn Memorial Hospital and Chulalongkorn University approved the study.","order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval and consent to participate"}},{"value":"Not applicable.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent for publication"}},{"value":"Dr. Limthongkul W. and Singhatanadgige W. have received a speaker honorarium from the Medtronic company. Dr. Richard A. Hynes has received royalties and consultant payment from Medtronic company. None of the work in this article was supported by the company or any other sources.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}],"article-number":"583"}}